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Motion In A Plane

Question
CBSEENPH11018440

A boy sitting in a train moving with constant velocity throws a ball straight up into air. Will the ball fall behind him?

Solution
The ball is thrown in vertically upward direction and given that the train is moving up with a constant velocity. therefore, the horizontal velocity of the train and ball are both same. And, the ball travels the same horizontal distance as that of the train. 
Therefore, the ball will come back into the hands of thrower.